Small Outboard Motors Compared: 3.6HP to 7.5HP Marine Engines for Boats and Budgets

When you compare marine engines propulsion options, the first question is what your boat actually needs. The four outboards below range from a 3.6HP 2-stroke at USD 214.66 to a 6HP 2-stroke at USD 545.93, with horsepower ratings up to 7.5HP in between. The real choice is about trade-offs: stroke type, starting method, and how much power you want for the price.

Quick take

If the goal is the lowest listed price, the 3.6HP outboard motor at USD 214.66 is the option to start with. If you want a 4-stroke engine with hand and electric start, the 4-Stroke 7.5HP TCI outboard at USD 319.45 offers the highest horsepower in this group. The two HANGKAI listings split the middle: a 4HP 4-stroke at USD 239.16 and a 6HP 2-stroke at USD 545.93.

Listed price comparison

Decision matrix

• Looking for the lowest listed price? The 3.6HP outboard motor costs USD 214.66.
• Want a 4-stroke around 4HP? The HANGKAI 4HP 4-stroke is listed at USD 239.16.
• Need the highest power and electric start? The 4-Stroke 7.5HP TCI outboard is listed at USD 319.45.
• Want 6HP from a 2-stroke? The HANGKAI 6HP 2-stroke is listed at USD 545.93.

Product notes

3.6HP Outboard Motor - 2-Stroke, 55cc

This 3.6HP outboard is listed at USD 214.66, the lowest price in this comparison. It uses a 2-stroke 55cc engine with CDI ignition, a 1.5L fuel tank, and a manual start. The listing describes noise around 80dB and a maximum speed of 5500rpm, which makes it a reasonable choice for a small boat where light weight and simple operation matter. It uses mixed gasoline and a half water-cooling, half air-cooling system. The limitation is output: 3.6HP is aimed at small boats, not larger craft. The manual-start 2-stroke routine also asks more of the operator than the electric-start model.

HANGKAI 2/4-Stroke Outboard - 4HP & 4-Stroke

Listed at USD 239.16, this HANGKAI outboard is configured as a 4HP, 4-stroke motor within a series that also covers 3.5/3.6/4/6/6.5/7HP. The 4-stroke design is the defining feature here, and the listed price is USD 24.50 more than the 3.6HP model. The description notes a lightweight machine suitable for boats around 100kg or less with up to four passengers, though speed will vary with load. It uses tiller control and manual start. The main limitation is the mild power step: 4HP is close to the 3.6HP outboard, so you are paying for a different engine style rather than a big horsepower jump.

4-Stroke 7.5HP TCI Outboard - 144cc, Hand and Electric Start

At USD 319.45, this 4-stroke outboard delivers the highest horsepower in the set at 7.5HP with a 144cc displacement. It is listed with TCI ignition, air cooling, a tiller control, manual tilt, and a 1.5L fuel tank. The description includes both hand and electric start, which is a key feature for buyers who want the option to start without pulling a cord. The limitation is its intended use: the reference speed of 11-13km/h and the modest fuel tank suggest a small fishing boat or utility craft rather than a high-speed vessel.

HANGKAI 2/4-Stroke Outboard - 6HP & 2-Stroke

This HANGKAI outboard is listed at USD 545.93, the highest price in the group, and it is set up as a 6HP, 2-stroke motor. It comes from the same series as the 4HP model but offers more horsepower in a 2-stroke configuration. The listing includes a 3-year warranty, a concrete extra. The price bar is the longest in this comparison, so the decision has to be about whether 6HP from a 2-stroke is worth more than the 7.5HP 4-stroke listed at USD 319.45. If the goal is to keep the price lower and get similar power, the 7.5HP model is the direct comparison.

Final recommendation by use case

• Lowest listed price: 3.6HP outboard motor at USD 214.66.
• 4-stroke mid-output: HANGKAI 4HP 4-stroke at USD 239.16.
• Maximum horsepower plus electric start: 4-Stroke 7.5HP TCI outboard at USD 319.45.
• 6HP 2-stroke with a listed warranty: HANGKAI 6HP 2-stroke at USD 545.93.